Horizontal stirring methane fermentation device with vertical cylindrical tank

Abstract

The invention relates to a horizontal stirring methane fermentation device with a vertical cylindrical tank. The device is a cylindrical vertical fermentation tank, wherein clapboards are longitudinally arranged in a tank body and parallel to one another; the middle part of the tank body is provided with at least one group of horizontal stirrers; a feeding hole is formed outside the tank body corresponding to the first clapboard; a discharge hole is formed outside the tank body corresponding to the last clapboard, is lower than the feeding hole and is connected with a liquid delivery pipeline; an overhaul well is arranged outside the semispherical top of the tank body; and a gas guide pipe and a gas exhaust pipe are arranged on the side wall of a shaft of the overhaul well. The device effectively solves the problems of miniaturization, low concentration, high construction cost, high operating cost, incomplete reaction, abnormal gas production in winter and the like of the conventionalmethane tank, effectively solves the problems of direct current and non-uniform mixing, is high in gas production rate, cannot be incrusted, is low in operating cost and construction cost, and is particularly suitable for the large-scale industrial, intensive and commercial production of methane.

Description

technical field [0001] The invention relates to a biogas fermentation device. technical background [0002] At present, the commonly used high-efficiency biogas fermentation devices are CSTR, UASB, USR, and HCPF. CSTR is a cylindrical vertical upflow high-concentration biogas fermentation process, and the cost is relatively cheap, but the concentration of this process should not be too high, because It relies on the sewage pump to feed the material, and there is no big agitator, which limits the increase of its concentration, and the highest can only reach 8%. UASB and USR two processes are also cylindrical vertical, although the cost is cheap but the concentration is lower. , so that these three kinds of operating costs are relatively high; HCPF is a horizontal mixer plug-flow high-concentration anaerobic fermentation process, its concentration is relatively high up to 12%, and the operating cost is relatively low, but because it is horizontal , It is determined that it ca...

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Problems solved by technology

[0002] At present, the commonly used high-efficiency biogas fermentation devices are CSTR, UASB, USR, and HCPF. CSTR is a cylindrical vertical upflow high-concentration biogas fermentation process, and the cost is relatively cheap, but the concentration of this process should not be too high, because It relies on the sewage pump to feed the material, and there is no big agitator, which limits the increase of its concentration, and the highest can only reach 8%. UASB and USR two processes are also cylindrical vertical, although the cost is cheap but the concentration is lower. , so that these three kinds of operating costs are relatively high; HCPF is a horizontal mixer plug-flow high-concentration anaerobic fermentation process, its concentration is relatively high up to 12%, and its operating cost is relatively low, but because it is horizontal , it is determined that it cannot be built large, and it cannot exceed 500 cubic meters at most, so its construction cost is particularly high

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